On recommendation from Sandia, I reserved in advance for travel from airport in Albuquerque to Santa Fe. The shuttle did not show up on time for previous reservations, so their service was already running late and on "over-flow". Then, our van overheated and broke down on the highway halfway from Albuquerque to Santa Fe. After a wait of over 30-45 minutes, no replacement van had arrived to pick us up, nor did Sandia offer to send any other means of transportation. Eventually we passengers had to call 3 taxis (at our expense) in order to make it into Santa Fe for our respective appointments that day. By that point, a few of us had already missed the beginning of previously scheduled events. While we were re-imbursed for the initial reservation, which I do appreciate, Sandia made no offer to re-imburse us for the cost for the taxi fare(s), which were covered at our expense. I had also sent an e-mail to them requesting this, which was met without response. As well, for the return ride, the shuttle arrived 20-25 minutes late. I was flying internationally and had to be at the airport 2 hours ahead of time; on my side, I had accounted for that, expecting adequate shuttle service, but felt stressed as I arrived with barely enough time. For a first-time experience using Sandia Shuttle Express, I was not impressed with the service, and unfortunately, would not feel confident in relying on Sandia in the future.