I think I hit my top speed of 8mph here in the bay area. Still haven’t found good truly deserted areas around here either.

When I wasn't in the traffic ridden bay area, here's a few top speeds I came across:

Hit 100mph in my parents '95 Suburban, that was fun, but learned that it has a gas shut off at 100mph exactly...

Hit 115 in my old Audi GT Coupe... that was a fun car. Happened to pass a CHP going the other way, but was lucky enough to notice, and ditch him before he could catch up.... phew. Also hit 115 in my '80 VW Rabbit L, stuck a 16V Golf GTI engine and converted it to a manual tranny with some sticky tires and that thing flew (for a Rabbit).

Still waiting for the opportunity to reach 145 in my 400e... I think it will be a while before I can do that :-(