Questions & Answers about Ми їдемо на південь.
Їдемо is the we form of їхати.
This verb usually means to go / to be going by some means of transport, such as:
- car
- bus
- train
- bike
So Ми їдемо на південь most naturally suggests we are going south in the sense of traveling, not walking.
Because їхати is the infinitive, meaning to go / to travel.
In the sentence, you need a conjugated verb:
- їхати = to go
- їдемо = we are going / we go
The ending -емо shows first person plural: we.