The all-electric Formula E series provided a first glimpse on Monday of what it said would be the world's most efficient racing car.
The third generation (Gen3) car, to be raced from season nine in 2023, was presented to the manufacturers, teams, drivers and sponsors at an event in Valencia.
Teams are testing in Spain ahead of season eight that starts in January.
"The Gen3 is our fastest, lightest, most powerful and efficient racing car yet," said Formula E chief executive Jamie Reigle in a statement.
"Together with the (governing body) FIA, we have built the world's most efficient and sustainable high performance race car.