My dealer doesn't have "rentals" or "loaners" but, when they kept my VX overnight to fix an electrical problem, they offered me a ride home via a "shuttle service" mini-van and said they'd pick me up at home when it was done. Worked out great as I live 20miles away from dealer and had my Fiero at home to drive.

Since I had to drive the Fiero to work the next morning...I swung by the dealership after work and the VX was done. They followed me home as I drove the VX and brought me back to get my Fiero. I was happy with the service.