The raycasting within Bullet ( eg for the vehicle wheels ) is very fast ( can have multiple vehicles ), it would be great if AwayPhysics was updated to allow direct calls to the physics raycasting.
As many game levels are set up with different visual and physics models ( eg a detailed visual model building, simple box for collision ), it would also ensure that the raycasting for other game related features are using the same physics data that eg the vehicle wheel raycasting is using.