Shift-Ctrl-Alt pedals were sold by Fry's Electronics in mid-90s, website is still up: http://www.bilbo.com/
This is second successful trial of autonomous vehicles in traffic we've heard about (the first is Google). It's clear that technology is viable. It's clear what benefits it will give.
The arguments against this technology remind me the early days of the Web: it was widely believed by skeptics that no one will ever use the Web for commerce because (1) there's no framework for financial responsibility, (2) internet backbone is closed for commercial traffic, and (3) there is no accepted technical solution for HTTP encryption, and encryption packages are considered controlled technology by US government and are prohibited to be freely distributed. All these objections were solved or waived in a couple of years.
Trying to be happy is like trying to build a machine for which the only specification is that it should run noiselessly.