Richlander, you're almost right about the Prius.
I've driven one here in the UK, and it's electric only below around 25mph, then the motor kicks in. If you floor it off the line - even though it's not particularly fast - the engine starts straight away, with the electric motor giving it that boost off the line until the engine's running, once you're moving the energy taken from the battery gets replenished by the motor. I don't know if the Japanese version and any others are a different configuration, but it's really clever, even if it does seem like one of the least popular cars in Prologue...
It's really cool trying to drive the thing smoothly to try and get the battery meter up to 100%...
And it's funny you can enter it in the K-Cup in GT2, it's bigger than a Ford Focus!