U.S. Xpress to deploy Platform Science technology Remote Platform Management technology will be installed first on Variant fleet, rest of U.S. Xpress trucks by end of year 1,007 2 minutes read U.S. Xpress will become the latest carrier to adopt Platform Science’s technology platform, allowing it to deploy third-party and custom apps without the need for added hardware. (Photo: Variant) U.S. Xpress’ (NYSE: USX) development of its Variant fleet has generated plenty of buzz in the industry, and on Wall Street. On its recent earnings call, one analyst questioned what Variant is really about and why it is different.