My point is "taking off" doesn't have to be as spectacular as what Conway or Franchitti experienced. Any car that has all 4 wheels leave the ground should be also classed as "taking off", so that should include the various flips and rolls we've seen including those in the clips i linked to.
its simply a factor of open wheel racing, unless you turn them in to GT/NASCAR type bodies it will always happen. i just hope we can continue building barriers that take the hit and cars that ensure the driver survives it.
PS. i like this forum, it so less inclined to fall in to a slanging match than keep to a reasoned discussion, unlike other areas around 10ths...