Want to look at some old but cool NASA engineering videos? You can! The Armstrong Flight Research Center (formerly Dryden) has uploaded a large number to Youtube.
Below the fold is one example, a tow test of one of the early lifting body spacecraft, the M2-F1, a prototype of the kind of spacecraft Dream Chaser is trying to be. What makes the video most interesting is the vehicle used to do the towing, a Pontiac Catalina convertible, and that it actually pulls it fast enough for the spacecraft to lift off the ground.