Im not sure if he couldnt go at a speed keeping up with the flow of traffic at 65 MPH or that he just chose not to do so (i.e. some greenie idiot who thinks that driving slow saves fuel and thus saves the planet even if it impedes the flow of traffic and creates a dangerous condition as other drivers try to pass), but yes, to me it didnt look like a vehicle that I would want to dive or be in, on a major interstate highway.
It scared me as a 17yo kid!
Jumping rice canal bridges at 100mph in a longer wheelbase almost race-ready rail was fun however. I saw the tops of the trees! Nice flat trajectory.