Lucas di Grassi says he is "very positively surprised" by the Abt Formula E team's progress in testing with its new Lola/Yamaha powertrain that will debut in December.
The most experienced driver in Formula E's history will continue his uninterrupted stint in the all-electric championship by remaining with Abt, the German squad having ditched the customer Mahindra powertrains it has used since returning for the Gen3 era in favour of newcomers Lola/Yamaha.
