The Ferrari 250 SWB was the 250 GTO's predecessor. Both prancing horses were prominent GT class racers in their day. GT stands for Gran Turismo, which is Italian for Grand Touring/Grand Tourer. :
GT Racing Car - LEGO.com US
Gran Turismo | The Lego Car Blog
Ford GT Heritage Edition and Bronco R 76905 | Speed Champions | Buy online at the Official LEGO® Shop US
Lego - Car Livery by Vampirxy | Community | Gran Turismo Sport
LEGO MOC 60312 - Gran Turismo by hoppepe | Rebrickable - Build with LEGO
Mercedes AMG Vision Gran Turismo GT6 | Peter Blackert | Flickr