Twitter writer

We're looking for the hardest brief in the world. Not to write - the brief is easy to write. We want a comedy writer to write three funny automotive tweets a week. See? Easy to write. Not so easy to do. We're a marketing agency, and we work in automotive. Yes, we should be able to do this ourselves but we are busy doing...agency stuff. So, we're looking for someone to do it for us.

Can you help with the humour?