Hi everyone, I'm trying to figure out the name of a movie, it's a B&W sci-fi movie from the 50s or 60s I guess, where I think someone or something comes to earth from another planet.

During the movie a guy, who I think was one of the scientists working on trying to investigate the situation, gets into his car either at his home or place of work, and takes off down the road. Suddenly everyone hears a crash and they run out to investigate. They find the guy dead in his car as it had crashed into something, but there was nothing there. Whatever he had hit was invisible.

One guy asks, what did he hit? And someone else replied, absolutely nothing!

I hope this rings a bell with someone, that would be great.

Thanks for your help!