Somehow I managed, on Uber-Mall in HD, to fly way above the finish line, near the roof and land on the S-curve that's after it.

Here's how I did it.

On the slope section that comes before the finish line, near the crest, I angled my nose up and then fired a speed boost after I raised my nose, one I was in the air, I angled my nose down and turned towards the s-curve before I landed.