You're right. I googled Houston to Tulsa and it's about 8 hours and about 500 miles. I don't know about "rest"stops and eating but I tend to drive fast so it works out I also have a long distance relationship but it developed over many hours of chats and emails.
Artchic I'm not unsympathetic but it seems you may benefit from working on how easily you get angry or upset. I guess the importance all depends on how long you knew this guy. But from the way you make him sound I think you might consider yourself lucky he rejected you, if that's what he did.