Hypersonic XLC used aircraft tires on its trains. These air-filled wheels produced a very smooth ride! The tires on the plane I fly go from zero to about 150 miles per hour when I land, so I personally can attest that the tires are extremely sturdy.
In this section of the ride, the train stopped and was weighed for a few moments. This determined how much air must be used to launch it.
©2017 by Joel A. Rogers