What is the difference between a road bike and a mountain bike?
Road bikes are built to be ridden on asphalt and cement surfaces and have thin tires, whereas mountain bikes are built to be ridden on dirt and have wider tires. Road bikes also have more aerodynamic handle bars while mountain bike handle bars a built for less responsive steering while bouncing around off the road.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: What is the difference between a road bike and a mountain bike?
### Input: 
### Response: Road bikes are built to be ridden on asphalt and cement surfaces and have thin tires, whereas mountain bikes are built to be ridden on dirt and have wider tires. Road bikes also have more aerodynamic handle bars while mountain bike handle bars a built for less responsive steering while bouncing around off the road.