One of his vehicles was sufficiently robust to make a journey in July 1829, two months before the Rainhill Trials, from London to Bath and back, at an average speed for the return journey of 14 miles per hour—including time spent in refuelling and taking on water.
One of his vehicles was capable of a journey from London to Bath and back in July 1829, two months prior to the Rainhill Trials, with an average return speed of 14 miles per hour, accounting for refueling and water refills.