James Corden does it, too.

But when he lets loose, theres a big difference: He has Adele or Stevie Wonder riding shotgun.

And tens of millions of people are watching their every groove.

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Credit: CBS

Mind taking a seat in the back for a sec,Lip Sync Battle?

For us to have shot onebeforewe were on the air is incredibly great for us.

[Carpools quick success] is not lost on us.

Inspired by a moment froma 2011 Comic Relief sketchin which George Michael sang Wham!

(It was an immediate hit,now boasting 17 million views.)

And wed go, No, no thats it.

Its singing songs in a car.

Then what makes it compelling?

lm different from when Im doing the show when theres an audience of 200.

After every song he was like, Oh, I havent heard that for ages!

Or, It brings me back to where I wrote this!

Its actually quite a lovely thing for them to reminisce; they hear their whole career in eight songs.

Its also having an impact on sales.

Stevie Wonders 2002 greatest hits album shot to No.

1 on the U.K.s iTunes in the days afterhis Carpool.

And how, by the way, is Carpools pick-me-up formula concocted?

(This led to Biebers revelation that he sings Morissettes Ironic in the shower.)

Corden may practice in his car for a week or so.

We were leaving the studio one night and he was in the car behind me, reports Winston.

It can be difficult to keep the shoots under wraps, though.

What to expect from his journey?

Taylor Swift, of course, he adds.

Sia is someone who Id absolutely love to have a go at.

Hes also brainstorming even more unlikely places for his sing-alongs.

I shant share it with you because Id like for you to be surprised, he says coyly.

But I have got one or two ideas of some detours we could make on the way.

Lets hope he keeps the good times rolling.