Nissan is currently experimenting with sweat-sensitive fabric that changes colour when absorbing sweat and is designed to highlight the issue of driving while dehydrated.
Called Soak, it has been created by Dutch company Droog, and is a response to a study carried out by Loughborough University into driving while dehydrated.
The results found it is just as dangerous to drive while dehydrated as it is to drive while under the influence of alcohol.
The research showed that if you drive while severely dehydrated, whether it be from lack of fluids or over exercising, then your reaction time and judgment are the at the same level as someone with a 0.08 alcohol level in their bloodstream.
The University put motorists to the test over a two-day period and found those who were well hydrated had only 47 driving incidents, but those who drove while dehydrated amassed 101 incidents.
Nissan has used the fabric in one of its Juke models, although there is currently no plan to put the fabric into production.