I've always been of the opinion that San Andreas is its own universe and should be treated as such. If it takes you five minutes to get to Sandy Shores from Los Santos, then five minutes is what it took. Why? Becouse if you roleplay that it takes two days to get back from Paleto, the other players around you will still roleplay that you've only been gone an hour because their characters haven't left town. It's just like prison time, X is arrested and comes back after 2 days as if he's been in prison for I don't know how many years, but for the other players it's only been 2 days in character and it creates too much of a continuity gap.