Newer electric cars (with regenerative braking) have a "one pedal" mode like you're describing (it engages some amount of regenerative braking by default, unles

Newer electric cars (with regenerative braking) have a "one pedal" mode like you're describing (it engages some amount of regenerative braking by default, unless you have the accelerator depressed a little, so you can just take your foot off to slow down).