In this clip, Ireland's Nicolas Roche and one of the mechanics with his Tinkoff-Saxo team talk us through the $20,000 prototype bike he used during the Tour de France.
His riding the machine was effectively a publicity stunt by Specialized to build and sell just 250 of the mounts, generating $5 million from those with the money to buy such exclusivity.
Roche was the only rider on the team to use the new limited edition Specialized Tarmac S-Works McLaren bike on the Tour.
The bike is claimed to be 10 per cent lighter than their new Tarmac version and is the result of the partnership between the bike manufacturer and the McLaren car company, with its expertise in carbon fibre development and manufacture.
It is the new carbon layup developed by McLaren’s Formula 1 engineers that results in the claimed weight savings.
The production S-Works McLaren is finished in a McLaren Papaya Spark orange paint finish complete with silver decals.
It also features a Dura-Ace Di2 groupset with a new version of the S-Works chainset featuring a carbon fibre spider.
However, because Tinkoff-Saxo is sponsored by Sram, the bike Roche used featured the Sram Red 22 groupset with 11-28 sprockets and a 53-39 chainset.
You'll find an earlier piece we did on the bike, with photos, by clicking right here.

The bike Nicolas Roche rode in the Tour de France; a prototype for only 250 to be built and sold at a combined price of $5 million.
