Build a Website

I want a simple website having only one page/landing page. The page design should be simple and attractive. I want a google map on page as a calculator where people will select their pick and drop location and google maps will tell the total distance then the calculator will give total cost of journey according to my taxi company's pricing. People would also search their pick and drop location or use markers to point locations. I will provide the logo and car's picture to include in the page. I want a long term relationship with the developer as I will be tweaking the website time by time.