1) BMW Nazca C2

Italdesign’s take on what should have been the M1 replacement with a 5.0-liter V12 from the 8-Series. Swoopy.
2) BMW Concept Coupe Mille Miglia

A concept harking back to the 328 Mille Miglia Touring Coupe, which won the Mille Miglia in ’40. Retro.
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3) BMW 328 Hommage

Another 328 love-in, this version features a 3.0-liter straight-six, CFRP bodywork, iPhones, and leather straps. Kinky.
4) BMW Vision Next 100

A centenary celebration showcasing where BMW was to go next. Augmented reality and gullwing doors, apparently. Future.
5) Audi Quartz

Sergio Pininfarina’s reworking of Audi’s Ur Quattro into a fully functioning prototype/concept. Stumpy.
6) Audi Avus

A groundbreaking aluminium spaceframe styled by Martin Smith and J Mays with a 6.0-liter W12. Shiny.
7) Audi Rosemeyer

Pure concept fantasy celebrating Bernd Rosemeyer’s Auto Union success with an 8.0-liter W16. Venty.
8) Audi Steppenwolf

Three-door compact SUV Q3 thing that aped the Allroad but had a carbon-fibre removable hardtop. Windy.
9) Audi Urban Concept

Ultra-light urban transport idea powered by electricity designed by a team led by Stefan Sielaff. Scary.
NOTE: This article first appeared on TopGear.com. Minor edits have been made.