Speed sensation effects

Hi,
I’m looking for some cool effects of giving of a speed sensation on the iOS platform. I can imagine that a radial motion blurr might be a bit on the heavy side so I was wondering what suggestions you folks have when it comes down to generating the experience of speed. speedlines or motion streaks is one idea that spins to mind but there might be other ways as well. Anyone got some cool ways of really establishing the experience of speed?

cheers

Tweening of the field of view value according to speed or acceleration is a classic too.