поезжай sounds too pompous.
In real life, people say едь, едьте.
The normative language, as always, lives in its own parallel universe.

Also, поезжай has a narrower meaning: ‘start moving’. You can’t use it when your addressee is already moving.
E.g. «Не едь так быстро» — “Don’t drive so fast”
*«Не поезжай так быстро» is impossible.

#78
BTW in Russian, we use the № sign for ‘number’, not #.
№ 78