Nascar is low-tech in many ways. The car bodies must fit production sedan templates, so the the chassis is welded tubular steel instead of carbon monocoque like on F1 or Indycar. The engines are carbureted instead of fuel injected. There's no turbochargers (although Indy just got those back this year as well). There are strict rules about spoiler size and type. They do make extensive use of sensors and telemetry, but…
I've been an F1 fan since I watched Ayrton Senna get killed 10 minutes after I turned on my first race in '94. Weird, but I was hooked. The last time F1 was run at Indy in 2005 was a disaster. Michelin brought the wrong tires and 14 cars did one lap and pulled into the pits quitting the race.
Senna was before my time, and I'm not even a F1 fan, but watching him in action is a mind-blowing display of skill. Here's an on-board view of an on-board lap in Australia: http://www.youtube.com/watch?v=sOkvo5v5-VU 1400hp engine (in a car body weighing half-nothing), manual transmission (Senna would drive with 1 hand on the wheel a good chunk of the time), no electronic driving aids...pure driving. I've watched docu…
That latter video is one of my favorites on YouTube: Senna on Suzuka in an NSX wearing loafers! His skill is truly unmatched, but to be fair, heel-and-toeing is a rather common technique in performance driving. Hell, I do so to match revs on every 3->2 downshift before a corner when driving around town, and I wouldn't call myself a skilled driver.