Or, he could just go and get a 30 day temporary tag for the car, saying it hasn't been driven in three years and needs a legal way to get it to emissions. You pay A-V tax on the spot, get a 30 day and go to get your emissions done. Return within 30 days and pay the tag fee, get a new sticker for the plate, and you've done everything the correct and legit way.

Another alternative is of course to tow it to the local emissions station.

Whatever you do though, make sure you have insurance on the car before it touches the road again.