Welcome to Allston Car Wash, the CAH SPA. We provide the highest quality washes and detailing services. That's why we have been voted Best Car Wash by Boston Magazine for 2007 and 2006. A WBZ A List Winner for 2007 and Top 100 Winner in 2006. Other awards of distinction include Best Car Wash and Best Car Detailing by the Improper Bostonian for 2005 and 2004 and Boston Magazine for 2003, 2001, 2000 and 1999.