A funny story i recall from the '80's
In the Northern Territory it's legal to drive left hand drive vehicles here, in other states you have to convert them.
As a result there are a few American cars here driving around that haven't been modified.
I had a mate driving a Mustang, he was sober but his passenger was definitely not.
He was pulled over for an RBT (random breath test) and the cop went straight to the right hand window, asked his passeneger if he had been drinking, he responded "I'm smashed" The cop made him blow in the bag as it was the colour changing crystals then and they instantly changed. While he was blowing he asked my mate what was so funny as he was laughing hard. He responded "I'm the driver" It was at that point the policeman noticed the lack of steering wheel infront of the man he had just tested. I can't recall what happened next, but he breath tested both of them and they drove off as the driver was sober but apparently the cop did not find it as amusing as everyone else.