Games : why do I get only vehicles mission?

The vehicle missions are the most boring ones and I keep having only some of these like "collect x times y", "break x times y" or do "do x meters with y".

I got more than 30 vehicle missions in row it does not seem very random.

At the beginning of the game it was not like that, what happened ? how are the missions chosen ? Is it because I have the gadget that makes me start with a free vehicle ?

Thanks