Honestly, this is the best theme I've ever seen for the PS3 and it's fan made. : r/PS3
PS3 Theme Ferrari 458 by AdyP on DeviantArt
Free bioshock theme http://www.ps3-themes.com/ type in this link and search for bioshock some cool themes honestly not sure if ps4 has free bioshock themes. : r/Bioshock
Cars/Transportation - PS3 Themes
Cars/Transportation - PS3 Themes
Free GT5 Prologue Themes for Your PS3 – GTPlanet
Free Ps3 Themes - Wallpaper Cave
Sexy Nissan Cars - PS3 Themes
Cars! #2 - PS3 Themes
Super Cars - PS3 Themes
My favorite PS3 theme that I've had for about 5 years and I will never change it. I'm pretty sure it was free. : r/PS3