Yep, I know what you mean. The shutter speed wouldn't allow us to see from where is it comming, because the time is very small actually, but I've to agree with your main idea. Maybe a combination of vanishing blur for the main perspective, and sort of curved blur for the tarmac might be great, very chanllenging also, no kidding! I think these wide angle photos + blur are the most difficult cases to chop.