Red Bull Global Rallycross
Tanner Foust and Steve Arpin won a final each while Chris Atkinson took a podium in the Red Bull Global Rallycross double-header in Thompson, Connecticut.
Foust dominated Saturday's Round 3, with pole position, three heat wins from three, victory in his semi-final, and a lights-to-flag triumph in the final.
His Volkswagen Andretti team-mate Scott Speed dropped to fourth at the start but gradually clawed his way back to second position by the finish, while Atkinson was seventh in that final.
In Round 4 on the Sunday, Foust looked on for a clean sweep but was pressured into a mistake by Loenbro Motorsports' Arpin, with Speed finishing second again.
Atkinson took his Subaru Rally Team USA WRX to third, his first podium in Red Bull Global Rallycross.
Speed leads championship ahead of another double-header in Ottawa, Canada on June 17-18.
Carrera Cup Asia
Martin Ragginger took pole position for Round 3 and led all the way despite a late-race mishap when he misread a sign and thought that the race was over, allowing Andrew Tang to close in.
The Austrian held his nerve over the final six laps actually remaining to take a victory which was far closer than it should have been, while van der Drift finished third after gaining two positions from his fifth-place grid position at the start.
In Round 4, van der Drift benefited from an early battle between Ragginger and Philip Hamprecht to move into the lead and take a first race win in his return to the championship.
Andrew Tang walked away from a massive collision with the fence when he speared off while trying to find a way past Ragginger.
The crash also ruined Hamprecht's race when a wheel that broke free in the impact bounced across the track and hit the German's own Porsche 911.
Will Bamber finished fourth in both races, while Stephen Grove's cameo saw him pick up a pair of 13th place outright finishes for fourth and sixth in Pro-Am class respectively.
The combined Carrera Cup Asia/Carrera Cup Japan race, for which all participating drivers were awarded equal points, went the way of Ragginger with van der Drift second.
Ragginger leads the Carrera Cup Asia standings by 11 points over van der Drift, with Bamber third.
Rounds 5 and 6 will be held on Thailand's Bangsaen Street Circuit on June 30-July 2.
New Zealand Rally Championship
Matt Summerfield has taken over the lead of the New Zealand Rally Championship after he notched up a second straight event victory in the Canterbury Rally.
Summerfield and Darren Galbraith went blow-for-blow as they alternated the lead through the first five stages before the latter withdrew with just a 0.1s deficit due to overheating issues with his Lancer Evo VIII.
With the next-best Graham Featherstone more than a minute further back and the rally half-complete, Summerfield and sister co-driver Nicole went on to take a comfortable victory in their Subaru Impreza.
Greg Murphy meanwhile picked up a third-place result during the Power Stage in his second rally in the new AP4-spec Holden Barina.
That stage was held in the darkness on the South Island, while Special Stage 4 also provided a spectacle as it was run in light snow.
Round 4, the Gold Rush Rally of Coromandel, will be held on August 26.
Stadium Super Trucks
Sheldon Creed has won both Round 11 and Round 12 of Stadium Super Trucks on the Belle Isle Park street circuit in Detroit, while Matt Brabham took two podium finishes.
Creed started from third in Saturday's Round 11 race after transmission issues during qualifying, took the lead by Turn 3, and was not challenged thereafter.
Behind the two-time champion, contact between Paul Morris and Arie Luyendyk Jr. allowed Gavin Harlien to move from fifth to second.
The fastest qualifier remained in that position for the rest of the race as he kept out Brabham, who finished third.
In Sunday's Round 12, Creed and Brabham came from eighth and ninth on the grid respectively to take the top two, ahead of Harlien.
The next event supports IndyCar at Texas Motor Speedway on June 9-10.
Blancpain GT Sprint Cup
Will Stevens and Markus Winkelhock have won the third Blancpain GT Sprint Cup round of the season at Zolder.
The first stint of the race saw an all-Audi R8 battle for the lead between Winkelhock in the #2 Team WRT entry and Clemens Schmid in the #75 ISR entry.
Winkelhock got close to making the move but Schmid denied him, and it was the pit crews who played their part when the two cars pitted together.
Stevens exited ahead of the #75 Audi that Filip Salaquarda had taken over, with the latter then coming under pressure from Robin Frijns (#17 Team WRT Audi R8).
That battle and management of traffic helped Stevens take the pair's first victory, while Salaquarda held off the Frijns/Stuart Leonard car which won the Qualifying Race.
Marcel Fässler/Dries Vanthoor (#5 Team WRT) made for an Audi sweep of the top four, while Franck Perera/Maxi Buhk finished sixth to retain a reduced championship lead.
The Endurance Cup takes place on the next two rounds of the Blancpain GT program, beginning with the Circuit Paul Ricard 1000km on June 23-24.