I wasn't planning on have limos as part of my genestealer cult force. I like the humour behind the old fluff but that's about as far as it goes. That being said, Antenocitis Workshop produce this rather nifty looking "Dodge Matador" Air Car that might form the basis of an acceptable limo-style vehicle. Something to think about. These would also work well for gang-style street-by-street fighting in 40k.