Two-wheeled breakthrough

As Lance's star falls (OK, implodes), Greta's rises. She threw her leg over her princess steed this evening after dinner and pedaled all the way to Car Wash park, then back home, and then around the block. Along the way, she said:

"Daddy, bicycling is surprising."
"Surprising? How so?"
"As long as you keep your momentum, you can ride right over the cracks in the sidewalk."