On 20 February 2013, Driver joined MLS side Houston Dynamo on loan until the end of the season with his contract at Hearts due to expire in June. He made his Dynamo debut on 5 March, making a substitute appearance in a 1–0 win over Mexican-side Santos Laguna in leg 1 of the CONCACAF Champions League quarterfinals. Houston lost leg 2 3–0, with Driver appearing as a sub. Driver made his MLS debut on 17 March, coming off the bench and scoring once in a 3–2 loss to Texas Derby rivals FC Dallas. On 5 May he scored to give the Dynamo a 1–0 win over the LA Galaxy. He then scored against D.C. United on 8 May in a 4–0 Dynamo win. Driver ended the MLS regular season with 3 goals and 1 assist from 26 appearances, helping Houston finish 4th in the Eastern Conference and qualify for the playoffs. In the playoffs, Driver made 5 appearances, 1 start, as the Dynamo reached the Eastern Conference Final, where they lost to Sporting Kansas City 2–1 over two legs. During the group stage of the 2013–14 CCL, Driver played twice as Houston failed to advance out of their group. He also made 2 appearances in the U.S. Open Cup during the season.