This might be irrelevant now but I just noticed something

Here you see Blaine walking to his car in 6x02

Here you see him in his car in 3x05

and here you see him walking away from his car after fighting with Kurt in the same episode:

Point: That is obviously Blaine’s car, which means that in 3x05, Blaine left Kurt in charge of bringing his car back after fighting with him in a parking lot. 

I just find that funny.