I'll create a car wash website using React for the frontend, Node.js with Express for the backend, and MongoDB for the database. Let's build this as a Next.js application with all the necessary features.

This car wash website includes:

1. Frontend (React/Next.js):

   • Modern, responsive design with Tailwind CSS
   • Homepage with hero section, services, booking form, about us, and contact sections
   • Interactive booking form with date picker and service selection

2. Backend (Node.js/Express):

   • API route for handling booking submissions
   • Structure for connecting to MongoDB (commented placeholder code)

3. Database (MongoDB):

   • Connection utility for MongoDB (placeholder implementation)
   • Structure for storing booking information

To complete the implementation, you would need to:

1. Set up your MongoDB database and add the connection string as an environment variable
2. Uncomment the MongoDB connection code in the API route
3. Deploy the application to a hosting service

The website is fully responsive and includes all the essential features for a car wash business, including service packages, online booking, and contact information.

Please make sure to add the following environment variables to your project: