[snizzle]

Originally Posted by Martinjlm

Assume it’s a PHEV:
T1/T2 is probably your starting point because you already have engine, transmission, exhaust, driveline, and fuel tank packaged. So you need a place to put electric motors. There will need to be at least two. You will also need to place the batteries. New regulations will require PHEVs to travel a minimum of 70 miles on electric only. That will increase size of battery, so battery packaging is non-trivial. Current PHEVs in smaller, lighter vehicles achieve 20 - 40 miles all-electric on batteries in the 18 - 25 kWh range.

Assume it’s an EREV:
BT1 is probably your starting point. Battery and electric motors are already packaged. You don’t need a transmission or driveline. The exhaust and fuel tank are simplified compared to a PHEV and so they’ll be smaller. The engine is the main issue for packaging. Remember that frunk in Silverado EV? That would be gone or significantly reduced. The 200 kWh battery becomes a 100 kWh battery. That should free up enough space for a small (10 gallon or less) fuel tank.

Interesting analysis. In bold, is that a federal regulation?