How's this sound. The current Hybrid battery allows the vehicle to travel up to 25-30 miles an hour before the gas engine kicks in. What if the battery was increased in size to twice its current size. Would this allow the vehicle to travel up to 45-50 miles an hour before the gas engine would kick in? The advantage would be going futher with just the battery and better gas mileage overall. If this sounds a bit much, then if you can come up with something better, lets hear it.