My main interest in drawing has always been vehicles. One sub-interest is emergency vehicles. This includes fire and police apparatus, and ambulances.
I've been working on a few different "ESU - Emergency Service Unit" vehicles, based off of NYPD's ESU. It's like a SWAT/Rescue combo unit.

I've also started toying around with drawing people. I'm not great, but I did some reference draws and I think they look nice.