Conservative math
Let's be conservative about the figure WTCT puts out in the news. They stated that they could save each trucke $18,000 while billing each truck $7,500. Let's cut the billing in half to $3,750. Trucker statistics have 15.5 million trucks operating in the U.S. Large fleets like Fedex and UPS Walmart, JB Hunt average a fleet of 40,000 trucks. If WTCT could just get a small slice of the action and get 100,000 trucks on board which is less than 1% of trucks.
100,000trucks x $3,750 = $375,000,000
Potential is enormous. If it really works expect more.