3 ms·

Radar/adaptive cruise control is an available option on just about any new ~$25-30k car and was common in the luxury segment for a good while before that.

• mikeash 11y ago
  Right, and other cars have lane keeping too. Tesla's implementation of both is the best out there, but mainly because they're less timid about it. Other manufacturers feel compelled to force you to keep your hands on the wheel and such, even when the technology doesn't require it.
  • superuser2 11y ago
    Tesla requires you to keep your hands on the wheel, doesn't it?
    • mikeash 11y ago
      Not in general. If the system loses confidence (bad lane markings, tight curve, that sort of thing) then it will ask (and then insist) that you put your hands on the wheel. But on a good road you can let go entirely and it will happily drive this way for a long time. They are careful to state that you should always keep your hands on the wheel. There's even a little popup on the instrument panel that says this when you engage the system. But they don't enforce it.