Photoshop Picture - Motorhome City

Hi. I'm putting together a website called Motorhome City. I require a picture for the home page that I have in mind. It comprises phot-realistic pictures of motorhomes (either front down or facing upwards), all standing vertically to form a New York style cityscape. The vertical motorhomes can form the city, or they can be part of, or in front of an existing New York style image. Result has to be realistic looking (not cartoon or drawing). Thanks. Charlie.