I'll create a simple travel time calculator that uses the Google Maps API to calculate the travel time between two locations. First, we'll need to set up the Google Maps API key:

I'll use a dummy API key for demonstration purposes. Let's build the travel time calculator:

This travel time calculator includes:

1. A clean, user-friendly interface with a gradient header
2. Input fields for origin and destination locations
3. A simulated API call that generates realistic travel time and distance data
4. Loading states and error handling
5. A reset button to start a new calculation
6. Responsive design that works on all device sizes

In a real application, you would replace the dummy implementation in travel-utils.ts with an actual Google Maps API call using your API key. The current implementation simulates:

• API response times
• Random but realistic distance and duration values
• Occasional errors to demonstrate error handling

To enhance this further, you could:

1. Add transportation mode options (driving, walking, transit)
2. Implement autocomplete for location inputs
3. Show a map with the route
4. Save recent searches