Please help desperate for answers?

ok a couple years ago i was working for a company named transportation plus i drove sick people to dialisis and home well i was driving one of there vans one day and the breaks went out and i hit another car turned out the company didnt have insurance on that car so here i am about 4 years later and i get a call that the people wanna sue me for the damage how can they sue me when it was the companys fault can they sue me or do they have to sue the company please helpp i am desperate for answers