I have the same problem with my Venza but only in adaptive cruise control in stop and go traffic. I suspect the braking function in the cruise control does not like the proximity of the vehicle ahead. It can be feathered but requires very subtle throttle control.
I have a Prius and a Venza both Toyota's and both have regenerative braking. In the past I had a prius with a 100,000 miles on it and at least 50% brake life left. I did scrub off tires, because I live in a very rural area with a lot of elevation change. You get used to driving with regen...
I have been following the Slate since its first announcement. The best truck I've ever owned was a Toyota 4 cylinder. It was great truck with its simplicity and lasted a very long time. I am really attracted to the simplicity of the Slate truck.
The limited range could be a problem. But I'll...