"We estimate rider growth has declined from a 3-5% annual growth pace pre-financial crisis to close to 0% today," wrote Beckel. "If our back-tested model is predictive of the future, we expect rider growth will dip into negative territory in 2017 and stay in negative territory for at least the next five years."

(2160p)

Petrol will drop below £1 a litre across the country within weeks, ministers predict as they increased demands on oil companies to pass on falling prices. Treasury minister Danny Alexander told MailOnline latest falls in the global oil price should see average prices hit the £1 mark at the pumps. And he called on drivers to use their buying power to put pressure on fuel firms refusing to respond.

Henderson produced four-cylinder motorcycles from 1912 until 1931 and, at that time, were the largest and fastest motorcycles, finding favour with sport riders and police departments. But this one’s special; based on a 1930 K.J Henderson with an inline-4 air-cooled motor, this custom is one of the most jaw-dropping art deco motorcycles we’ve ever laid our eyes on, with curvy custom bodywork that would have impressed even legendary coachbuilders of yore. More pics and info at source.

The Hellcat Speedster is the latest in Confederate's Hellcat series, which it's been building since the early 2000s.

That'll teach him to ride properly

Not all bikers are bad

Biker helped catch the bus

Forget speeding bullet trains or SUV’s, when it comes to Vietnam the majority of the public whizz around on motorbikes. It’s the cheapest mode of transport to run and ideally suited to the often bustling, narrow and busy streets.