Why are car gas caps a big hit in the US?
Gas caps were a huge hit at the 2012 Tokyo Motor Show, selling out in a matter of hours.
The big question is why?
Why did the caps go up in popularity?
And what is the science behind the phenomenon?
Read moreNew Scientist asked experts from a variety of industries to comment on the caps’ popularity.
Some were keen to point out the differences between cars and the gas in a car’s fuel tank.
Others were keenly aware of the impact of the caps on the environment.
In all cases, they said the caps were important because they made it easier to buy fuel for their vehicles.
It was a big market for car manufacturers, and they were eager to have the caps available.
Gas caps are not as popular as they were a few years ago.
They are now the most popular item for most petrol stations in the world, and are being sold at nearly every petrol station in the UK, Australia and Europe.
Car sales rose 7.4 per cent to $4.3 billion in the first quarter of 2017, according to figures from market research firm Gartner.
But they are no longer the fastest growing market in the global car market.
Sales of the cheapest petrol in the United States rose 6.5 per cent, while the second cheapest was up 9.7 per cent.
“The car industry has a long way to go before it can be considered a viable alternative to petrol,” Gartners analyst Peter Nunn said in a statement.
“Car manufacturers need to focus on increasing sales, not on selling out of the fuel tank.”
The market for fuel-efficient vehicles has been slow to grow since the global recession, and it will take more than the growth of car sales to help the sector grow, Mr Nunn added.
According to Garters, global sales of the smallest-capacity vehicles are down by almost 30 per cent over the past five years.
So far, petrol-powered cars account for less than 3 per cent of global vehicle sales, and about 10 per cent in the European Union.
The UK car market is already home to some of the world’s biggest petrol stations.
More than 30 million of Britain’s petrol stations have fuel-saver cap prices.
And they are not the only ones offering fuel-saving equipment.
A number of American cars, including the Toyota Camry and Honda Civic, have also been designed to reduce the amount of fuel they burn by up to 10 per a litre, to help them reach the speed limit faster.
However, petrol is not a major market for many petrol stations, and many are still not stocking up on fuel for fuel.
Gartner said petrol sales have declined slightly in the past two years, but they are still growing.
If the UK market is the most important for petrol sales, it should grow as rapidly as petrol sales do in the rest of the EU, Mr Nelson said.
While petrol sales are still up, the market for gas-efficient cars has been slowing.
Fuel efficiency has risen in many countries, from Germany to Japan and China.
There has been a shift away from diesel engines in some European countries.
Gas-saving vehicles are still available in Australia and many other developed countries.