This week's mini-special is an epic road trip that features stunning cars, challenges and a race to catch some bream.

Bladders, Baku and the Black Sea – this week’s episode of The Grand Tour is quite the adventure.

The presenters head out on a road trip that they’ll never forget, determined to answer the all-important questions – which is the best car to use if you’re on the shores of the Black Sea in Georgia and you really fancy eating some bream.

Where are you going to head? 1,000km down the road to the freshwater of the Caspian Sea in Azerbaijan. Obviously.

Sandwiched between Iran and Russia, the trip features some incredible sight-seeing of countries that won't have been on many people's holiday wish-list.

Here are five reasons you won't want to miss Sea to Unsalty Sea

Sunburst orange or brown?

None of the cars were without fault this week, but you'd be a tough critic if your heart didn't ache a little bit for one of these cars.

Taking to the limit on the 1,000km journey were an Aston Martin DBS, a Bentley Continental GT and the BMW M850i. Nice.

Azerbaijan and Georgia

They're probably not at the top of many people’s holiday destinations, but the diversity and richness of these countries is breathtaking.

From the bleak and industrial to the stunning and modern this journey takes the presenters across every sort of terrain and landscape.

Whether they're drag-racing in cities or losing out in races to old bangers through cobbled streets, the shows captures the rich history and changing dynamics of the region. It even dabbled in a bit of politics at the Russian border, as they spoke to a Georgian man, who had found himself denied access to his land on the wrong side of a barbed wire fence and armed soldiers.

Nigel Mansell's head

When you find yourself in Joseph Stalin’s childhood home, would you expect anything less from Jeremy Clarkson than to cause some terrible mischief?

Teaming up with James May, the duo stick a massive statue head of Stalin – or as they tell Richard Hammond, F1 driver Nigel Mansell.

Why do the locals keep gawping at Nigel Mansell? He was very big in Georgia.

Bathtime beautie

Along their travels, the boys test out various bathing techniques that will make your mind boggle.

Have you ever fancied seeing Jeremy Clarkson bathe in crude oil? Even if you were slightly curious, once James May's started talking about scabs and dandruff you'll be reaching for the sick bucket.

Jeremy Clarkson's damp jeans

For three old men, this was arguably Mr Wilman's cruelest challenge yet – testing not just their driving skills and cars, but also their bladders.

In an attempt to see if they would drive any faster after downing three pints of water, the boy sprinted off in a race to the bathroom. James May got lucky and made it the loo ahead of a cross-legged Richard Hammond.

Clarkson on the other hand took a much more laid back approach to the problem, ‘dealing with it’ on the second turn. We just hope he changed those jeans before he got back in the car again.

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