What-4

==Description==
The What-4 is a Hot Wheels casting which debuted in the 1971 Hot Wheels range of vehicles. It's name is a play-on-words to what is likely a first reaction thought by viewers; "Four engines? What for?!". Although, pre-production artwork suggests its original name was 'Flat 8'.
It was made at the Hong Kong production facility and features a white plastic fin which can be raised or lowered by hand. Most cars have blue tinted glass but some can be found with clear glass. Interiors could be found in brown, white or black. It was packaged with a plastic 'collectors button'. In 1972 it was packaged on a "Drivin' Gear" card without a button.
The What-4 is known to have issues with a metal fatigue called 'Crumbling' where the body or chassis develops cracks and literally crumbles into pieces.
The What-4 has not been seen since its initial release, although an unrelated follow-up casting was created in 2004 called the What-4-2.
==Versions==
The What-4 has come out in the following 1/64 scale versions:
Year	Series 	Color 	Stickers	Base Color / Type	Window Color 	Interior Color 	Wheel Type	Toy #	Country 	Notes / Variations	Photo
1971	1971 Hot Wheels	Spectraflame Blue 	None 	Unpainted / Metal	Clear or Blue Tint	Black, Brown, or White	RL 	6001 	Hong Kong	 	
1971	1971 Hot Wheels	Spectraflame Aqua 	None 	Unpainted / Metal	Clear or Blue Tint	Black, Brown, or White	RL 	6001 	Hong Kong	 	
1971	1971 Hot Wheels	Spectraflame Green 	None 	Unpainted / Metal	Clear or Blue Tint	Black, Brown, or White	RL 	6001 	Hong Kong	 	
1971	1971 Hot Wheels	Spectraflame Light 'Apple' Green	None 	Unpainted / Metal	Clear or Blue Tint	Black, Brown, or White	RL 	6001 	Hong Kong	 	
1971	1971 Hot Wheels	Spectraflame Yellow 	None 	Unpainted / Metal	Clear or Blue Tint	Black, Brown, or White	RL 	6001 	Hong Kong	 	
1971	1971 Hot Wheels	Spectraflame Red 	None 	Unpainted / Metal	Clear or Blue Tint	Black, Brown, or White	RL 	6001 	Hong Kong	 	
1971	1971 Hot Wheels	Spectraflame Rose 	None 	Unpainted / Metal	Clear or Blue Tint	Black, Brown, or White	RL 	6001 	Hong Kong	 	
1971	1971 Hot Wheels	Spectraflame Magenta 	None 	Unpainted / Metal	Clear or Blue Tint	Black, Brown, or White	RL 	6001 	Hong Kong	 	
1971	1971 Hot Wheels	Spectraflame Purple 	None 	Unpainted / Metal	Clear or Blue Tint	Black, Brown, or White	RL 	6001 	Hong Kong	 	
==See Also==
*What-4-2
==Gallery==
What4GroupPhoto.jpg|What-4 Group photo, note the clear glass on the green version and all three different colored interiors.
What4 Crumbler.jpg|Crumbler What-4 in Magenta
What-4.jpg
What4-C.JPG
HW-RL-What-4-purple-Resized.jpg
File:What-4 Green.jpg|Green What-4 on "Mantis Card"
Category:1971 Hot Wheels
Category:Bob Lovejoy Designs
Category:Unlicensed Hot Wheels
Category:Hot Wheels Original Designs
Category:Vehicles with Movable Parts
Category:Discontinued Vehicles
Category:Vehicles with Multiple Engines
Category:Cars with exposed Engines
Category:1:64
Category:1970s
Category:Central-Drive Cars
Category:Vehicles with Bubble Canopies