Super Cruise promises an extra level of mapping accuracy thanks to the use of extensive LiDAR data (recorded by other cars, not the CT6) in addition to the usual onboard sensors and GPS. However, this is also lets Cadillac dictate where you're allowed to use the feature. It'll only be allowed on divided, limited-access highways with clear entrance and exit ramps -- where Tesla is relatively flexible as to where you invoke Autopilot, Cadillac will make you take the wheel in most cases. This isn't because it can't do the job, to be clear. Super Cruise lead engineer Barry Walkup tells The Verge that it's limiting the feature to "build consumer and regulatory confidence" in advanced driving tech.

The upgrade definitely shares one thing in common with Tesla: it's expensive. You'll need to buy the CT6 in luxury or platinum trim levels, which means at least a $66,290 price tag... and you'll have to pay at least another $2,500 to add Super Cruise (the luxury model also requires a $3,100 driver assist option). GM isn't exactly democratizing the concept, then. However, this may be the first exposure to semi-autonomous tech for legions of car buyers who may not even know Tesla exists. If it takes off with Cadillac, it'll increase the pressure on other automakers to step up their game.