I recently had to drive 5 hours on very little sleep, and I only had tea available. I had to stop at a gas station to get coffee because the tea wasn't cutting

I recently had to drive 5 hours on very little sleep, and I only had tea available. I had to stop at a gas station to get coffee because the tea wasn't cutting it, even at triple strength. T will stop me from being able to fall asleep, but it does not keep me alert in the same way that coffee does.