I saw some TMNT nano cars the other day at the store and it made me want a tiny little Ecto-1. I know there are hotwheel Ectos but I’m talking the ones even smaller than that.
Certainly not official MicroMachines versions. They haven’t really added to their range since the late 90s!
I think the closest to an Ecto you’d find would be the '59 Cadillac Limousine but would need modifying.
You’d probably be better off making a mini one yourself by 3d printing something in resin and attaching it to a preexisting chassis. I’m sure if you googled for an “N scale” Miller meteor you’d find one. Or simply scale down a larger model to 1:160.
There’s an N scale ecto 1 
Dang, I would have bet money there’d be an official Ecto somewhere. Saw TMNT blimp, van, and technodrome. Then I saw BttF123 DeLorean set and picked that up. I don’t have a 3d printer but maybe I’ll try finding a printed one somewhere. Thanks!