Thought I'd have a quick go while sat in coffee shot waiting to go into work so first of all, hope you don't mind :!:
Filled plate area, reduced amount of red in shot (caused by street lamps) but left in red highlights to rear light still resonates. Cropped out upper street lamp so blue sky balances your lovely motor more. Then finally I slightly reduced the saturation so the night shot colour compensation your camera created looks more natural.