Great videos! As a resident self-expressed Sim Racing guru, I have to say those graphics are outstanding for 1997. The smoothness, draw distance, 3D building models, etc., are all pretty amazing. Rob, that IMSA game is head and shoulders above most racing games on the N64. Also RR64 came out in 2000, this thing was being developed in 1997!
I compared it to the PC racing games of that era:
1997's Need for Speed II on Windows: http://www.mobygames.com/game/window...eShotId,28508/
1998's Test Drive 5: http://www.mobygames.com/game/window...meShotId,1392/
1999's EA Sports Car GT: http://www.mobygames.com/game/window...eShotId,99234/
2000' s Test Drive: Le Mans: http://www.mobygames.com/game/window...ShotId,160121/
Can't believe I've never heard of the M2? As for the pricing, I'm sure it would have been way too expensive, providing instant doom in the same vein as the SuperGrafx, Neo Geo, SEGACD and 32X, 3DO, CD-i, etc.