[LastHobbyPromise]

Will all HO car mfg's work on this track?

With a couple of historical exceptions, all HO manufacturers' cars will work on all HO track systems.

The Auto World strip is the simplest out-of-the-box option, but doesn't have timing. Be aware there's a cheaper ($100) version that does not have the electronics - only a mechanical finish line flag. Probably worth avoiding.

If you want timing, the Slot Dragon drag timing system (here) starts at $166 and you should be able to pick up used AFX track for a few dollars. If you upgrade the track, the Slot Dragon system can be swapped over easily.

If you're comfortable with the idea of building a timing system with an Arduino Mega board and a laptop / desktop computer, then Drag Race Coordinator is donationware and the components shouldn't cost you much more than $50. Plus the track, of course. That would give you more functions than Slot Dragon.

Trackmate gives you a miniature version of a full-size pro strip. But that will cost $795, plus the track. A MaxTrax eighth mile (15.0ft long here) starts from $250. So a deluxe routed strip + power + controllers + Trackmate will be heading towards $1,250. A good-value AFX + Slot Dragon system, anything from $200 to $250, depending on the power supply and controllers. A Drag Race Coordinator +AFX system could be put together for anything between $50 to $100, but requires more skills and work. Or an out-of-the-box Auto World strip (no timing) for $150-ish.

Not that I'm trying to get your wife to kill you or anything

The reason I asked about the cars is, I bought a 1/32 Carrera set not realizing not all cars work on the Carrera Digital track.

I really like the elapsed timer! I think I am gonna pull the trigger on it and the Auto world set.  

Need your address, might need a place to stay.  :)