The TCH stops regenerative braking around 6MPH or so. The friction brakes take over at the lowest speeds.

A hint for stop and go. For any car. Don't brake. If people are accelerating to 40 and then stopping, run a constant 20 or so. You want to meet up the with stopped car in front of you as he is accelerating back up to speed. Keep a constant speed.

Even with regenerative braking, you are only getting about 50% of your energy back. Converting energy from gas to heat to kinetic energy back to electric energy and then back to kinetic energy has a lot of conversion "taxes" involved.