This is a lot of 6 vintage used hard plastic cars.  The cars are as pictured and as listed below.

 

 - Red / blue truck - 3.25" long - Wannatoys - some soiling and blue dump portion does not stay attached

 - Red truck - 3" - Manoil

 - Red convertible - 5.25" - Irwin - cool - with clear windshield still attached

 - Yellow car - 4.5" - BHS I-183

 - Maroon car - 4.25" - Lapin

 - Red car - 4" - Lapin - missing front wheels