This is something that's been getting on my nerves lately in TDM servers with vehicles. Let me just put it in a little story:
You walk out of the spawn room, ready to fly to the enemy's base/ship/ass. You hop into the one of many, many vehicles there and begin to drive off. Suddenly, you see bullets flying out from behind you, and you use free look to see who's shooting at you. Apparently, it's some impatient toddler on the same team as you, who can't wait to get the plane your on, and refuses to use any of the other vehicles. If you're lucky, the little stuff won't blow you up. Unfortunately, he somehow hits your plane, which will either kill you or just leave you in the middle of nowhere.
Not only are the people who do this pretty much sabotaging their own team, they're acting unnecessarily childish. If you're that loving impatient, then use one of the other vehicles. They'll get you where you want to go just fine.
Discuss.