Lycra jammers create more drag than human skin so wearing Lycra speedos will allow you to swim faster.
Jammers made from the sharkskin fabrics have less drag then human skin and will allow you to swim faster the more skin you cover. Sharkskin fabrics are very expensive, don't last long and difficult to get on and off.
Most student swimmers can't afford sharkskin for minor meets so have to choose between Lycra jammers or speedos.
Wearing Lycra jammers will at first glance confuse opponents into thinking you have sharkskin, but really nobody is fooled, so if you can't afford sharkskin you might as well wear speedos.
The Austin Allegro car was supposed to be a sporty saloon but the designers had an interior heater unit thrust upon them that was so large it forced them to raise the bonnet to accommodate it, changing the cars looks from sleek to frumpy. Since most cars in this class were already hatchbacks at the time the Allegro was launched the frumpy looking saloon with a small boot (trunk) was not popular.
In an attempt to salvage their honour Austin fitted the Vanden Plas version of the car with a Rolls Royce style radiator grill, it seems not many people wanted their already unpopular frumpy looking small car with a tiny boot to look like a Rolls Royce.
https://en.wikipedia.org/wiki/Austin_Allegro
So if you can't afford the really expensive option go for something small and sleek with good rear access
https://en.wikipedia.org/wiki/Ford_F...rst_generation)
https://en.wikipedia.org/wiki/Volkswagen_Golf_Mk1