Bad Piggies Flight in the Night Level 4-11 is three starred using two runs. In either case, travel rightward, toggling the powered wheels on and off to maintain stability. After you do a wicked flip, decide whether you want to grab the box or beat the clock. For the box, run the wheels all the way to have enough speed. Otherwise, to beat the clock, stop the wheels about half way up the last incline to roll back to the finish line.
If you have a different strategy for completing this level feel free to leave a comment below.