Peru is my current town (and I've lived in this town and the next one over my entire life) ...if you were from Peru, you wouldn't ditch a car in that spot, unless you wanted someone to find it or didn't know the area IMO there are woods within a mile or two in every direction and a state park with a lot of parking and woods the next town over (Starved Rock in Utica) which would make a more ideal dumping spot than in the literal middle of town.
We used to leave the high school and walk that way, then cut through the woods to get to the YMCA....and you wouldn't park there to do that, since you can park on side streets, at the Y itself, etc. You can pretty much park anywhere all over Lasalle and Peru.
There are 2 popular bars up the street (Jake's and 9th street pub) ...young crowd, good food, and live music a lot of the time. I hope they asked the owners, who are usually there, and patrons if they saw anything. Those are 2 of the most popular food and drink spots in this tiny area. They both have Lasalle addresses, but are only a few blocks away. 9th street Lasalle turns into 12th street Peru, so heading west towards Peru from that street (and those bars I mentioned), there is a small field and wooded area on the south side, other than that, it's mainly all residential and not heavily wooded, except around the YMCA.
I can't see him buying dispensary Marijuana and selling it in this area, unless it was to minors...the dispensary prices are super high and any adult would pay that before paying a surcharge to a dealer as well. We have one located in Ottawa, which is not that far away (same county).
Did he have ties to high schoolers here? (Cousins, friends, etc). There is very minor crime in the area, but a few months back there was an incident were a man from peoria threw a girl into a car in the middle of the night, turns out they were from Peoria and it was domestic, but very odd for this town.