Deductions & credits

When I was adding my miles for 2017 (on a different vehicle), Turbo Tax asked me if I stopped using my car for business, sold it or gifted it.  I said I stopped using it for business.  Then it asked me if this was the first time business usage went below 50%.  I said no.  It has always been below 50%.  Should I say yes?

I said no and then turbo tax said I was done and the car is not listed anymore.  The car I used in 2017 is the only one left.

I do not see a Business Assets button after I click on Edit your Business and there is no Large Purchases button at all.  I have never took depreciation for this vehicle. Thanks!