It's a standard chassis yes, but the powertrain is made by the teams. It's to force the manufacturers to concentrate their developments on the EV powertrain (co

It's a standard chassis yes, but the powertrain is made by the teams. It's to force the manufacturers to concentrate their developments on the EV powertrain (cooling, inverter, motor etc) instead of aerodynamics and suspension. The battery is also a spec part to force powertrain efficiency rather than cramming in more batteries, plus battery technology is expensive.