Can-I enter 3D printed cars in a tournament ?

I'm guessing so long as it applies to rules of the tournament (ie: if they require a certain type/model of car) it wouldn't be a problem. 

Look up War on I4 on Facebook. Luthrell over there has been developing 3D printed cars for a few months now.

As RLoRacing says above, as long as the cars comply with individual tournament rules, I can't see why they would be banned, but best to check with each host before committing to send them.

Maybe this will inspire someone to host a 3D event. There's a place for zoomins, so there's a place for 3D. If there's wheels someone will want to race it.

I don't see why not  If you want you to enter my tournament I have a few spots left. Miniature Car Racing  As long as they fit on the Orange track they're good 2 me

I would love to test run your 3D printed car. Durability testing. A 3D printed tournament sounds like a great ???? idea. Let the creativity bloom. What do you have to offer. I bet cars with bearings could be built-in. Super fast and stable. Suspension cars for the 4x4 path. 

My out door tracks can race most any scale cars from 1:64 to 1:18. 

I wouldn't bc you would have to add a lot of weight to get them competitive also getting them small enough will be hard af.

dm though if you wanna collab, I have had this idea in the past but dismissed it. I am also experienced with tinkercad

     Diecast cars over the decades have evolved from one-piece lead bodies with solid metal wheels to detailed, acurate castings with window glazing, separate tires, and opening panels. All this occured before Mattel even thought of changing the game with Delrin bushings and Spectraflame paint. It is inevitable 3d printing will play a part in whatever comes next, so please continue your experiments with it. Que sera sera.