Racing game questions

OK so I have played Toybox Speedway and it is fun so now want to make my own track. Was going to do Le Mans as I have a Scalextric plan for the circuit so was going to try and copy that.

Before doing so I though I would let a track creator loose and have a try on a Toybox track. Well the track was built fine but I found two 'issues' :
1. Four cars only where Speedway had 6
2. Only Cars cars and not other characters in a range of cars

Is this all that 3.0 can do or do I need to unlock something or edit something to have 6 car races and have other 3.0 characters driving them?

Any advice greatly appreciated.

Thanks
CJ

That's what the opponent are always like in the toy box. There's no way to change it.


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I got a question, too: Is it possible to unlock new cars for speedway except for the two at the start? Or is there a way to 'call' different vehicles, like from these columns in these main toybox games?
Thx

Nearly all the cars you own in game can be used on the speedway. Just before and to the side of where you choose the races, there's a place to select a vehicle. Plus, you can race with nearly any vehicle disc. Just place the disc under the speedway toy box piece while you're in the speedway hub.

Oh my, I thought those IN-plates on the floor were just for decoration Thanks for the hint