Questions & Answers about Мы приедем в город завтра утром.
Russian has many verbs of motion.
- ехать / ездить = to go (by vehicle), to be on the way
- идти / ходить = to go (on foot)
- приехать = to arrive (by vehicle), to come and reach the destination
In Мы приедем в город завтра утром, приедем is the future tense of the perfective verb приехать. It focuses on the result – the fact that you will have arrived in the city.
If you said мы поедем в город, that would emphasize setting off / going there, not the arrival (see next question).