Picked this up off of Wikipedia.
"The chase scene featured Lola T70 Mk.IIIs with dummy turbine engines racing against Yamaha TA125/250cc 2-stroke race replica motorcycles through two San Francisco Bay Area automotive tunnels: the Caldecott Tunnel between Oakland and Orinda, and the underwater Posey Tube between Oakland and Alameda."
The car ID is easy but still wonder about the bikes. Given their tiny size though I'd be inclined to believe Wiki.