Ahead of last weekend’s Miami E-Prix O’Sullivan showcased his speed on the rookie grid.
O’Sullivan, who is set to commence a second season in the Japanese Super Formula series, was once again behind the wheel for Envision, having partaken in previous tests with the British squad.
The 40-minute session, as well as giving inexperienced drivers seat time, played a vital role as teams looked to maximize their data gathering ahead of the Formula E race at the Hard Rock Stadium venue.
O’Sullivan was fastest in both 350kw with four-wheel drive and 300kw with rear-wheel drive, with a fastest time of 55.810s
Second was Theo Pourchaire for Citroen Racing, 0.093s adrift of O’Sullivan, with Gabriele Mini a further 0.018s back.
The field of 11 cars was covered by just 1.42s.
Zak will be back on track with Envision in March, participating in the Rookie Test in Madrid.