The movie you're looking for is called [Heartbeeps](http://en.wikipedia.org/wiki/Heartbeeps) starring the late Andy Kaufman. Here's a plot synopsis:

> Val Com 17485 (Andy Kaufman), a robot designed to be a valet with a
> specialty in lumber commodities, meets Aqua Com 89045 (Bernadette
> Peters), a hostess companion robot whose primary function is to assist
> at poolside parties. At a factory awaiting repairs, they fall in love
> and decide to escape, stealing a van from the company to do so.

[And here's a trailer on YouTube.](https://www.youtube.com/watch?v=XvHlApBr6r4)