Can someone explain why DRS is not enabled from the beginning of the race?? Why they wait these laps before enabling doesn't make sense to me. I guess they are waiting for the race to settle "in", but can't they just use yellow flags if there are accidents early on?? For example, on the re-start today after safety car, Vettel would have easily passed Hamilton if he could have used DRS. It would add a level of excitement to the beginning of the races for sure.