Squealing tires and checkered flags aren’t the first things that come to mind when the name Hewlett-Packard is mentioned. However, last month at the Toronto Molson Indy, the Mississauga, Ont.-based company showed itself not as the famed printer mogul, but as one of the associate sponsors of auto racing CART team, Team Rahal, co-owned by ex-racer Bobby Rahal and talk show host David Letterman.