Personal opinion in term of composition..
1) handchopped - preferably showing the hand laying on the window frame
2) window frame at the right top and bottom - either you frame the whole photo or don't frame at all
3) wait for the right timing - wait for the uncle at the background to move away
4) overall i would prefer the shot to be taken further away and slightly tilted down..would like to see more of the steering wheel (that's an interesting object)

well..if not then probably just crop away the uncle