I believe that was an MCI rather than a Prevost. That was a 30 mph crash. This video is an MCI undergoing a 35 mph crash.
There is a significant difference in impact with the 5 mph additional speed. A concrete barrier is a formidable obstacle. Virtually all of the energy of the wreck is transmitted back to the vehicle. Hitting a concrete barrier at 35 mph has the same force as hitting a similar weight vehicle head on that is traveling at 35 mph toward you. If you hit something, go for something softer and preferably at a glancing blow rather than head on.