If you could shut down a highway to play with connected cars, what would you do?

With several miles of elevated highway, a moderate volume of volunteered & OEM supplied vehicles and open minded infrastructure partners a pretty broad range of hacks/trials could be accommodated. Actively driving vehicles off the road and/or damaging them would be frowned on. However, sudden avoidance of "soft" obstacles under different scenarios definitely works.

Not sure how to work in the scoring aspect of a flying v, but would definitely be fun to model fuel savings of cars doing the same.