The Lotus Seven was produced by the British car manufacturer Lotus between 1957 and 1972. It is a simple, lightweight open top two-seater. Early engines didn't have much horsepower, but the car has always been quick and sporty because of its weight.
The pinewood derby is an event created by the Boy Scouts many years ago. Each scout is given a pinewood derby kit typically consisting of a block of wood with slots for axles, 4 wheels, and 4 nails to be used as axles. The scout (and his dad, usually) will then carve the block of wood into the shape of a car, paint it and apply stickers, install the wheels on the axles, and then race it at the "derby", which involves a sloped track with a timekeeping apparatus.
An official scout derby will usually require that the parts in the kit be used for cars entered in the derby. Other organizations (including workplaces) often hold derbies, too, and some of them require the use of the parts in the box, including the block of wood.
These "pinewood derby car shells" are intended to be used with an official derby wood block, cut down to size, along with the axles and wheels included in the kit. A printable model of the shaped wood block is provided. You can either use the printed model or use it to accurately cut an official wood block down to size.
Notes:
Just super glue all the parts together.
“Show wheels and tires” are included, but are optional. They are not suitable for racing--you should use the wheels that come with the kit if you race the car.
This car was smoothed with 3d printing resin and baby powder. You can find videos and guides online that describe the process, but here it is in a nutshell:
You can add tungsten weights to the holes in the rear of the body. If you plan well, and use enough infill, you can maximize the weights and end up right at 5 oz.