This may not end well.
According to what is probably the biggest forum post on the game ever on GTPlanet from Amar212, the install for Gran Turismo 5 will take over 50 minutes to complete.
Amar claims his install was done in 40 minutes, though.
Not only that, the install will take up a massive 6.4Gb on your hard drive.
You may remember Amar provided these subtle hints to the game last April before its official unveil at E3 two months later.
There's more on it here. If you want to see the ultimate GT5 info wank, hit that link.
Gran Turismo 5 launches worldwide on Wednesday for PlayStation 3. Watch Kevin Butler steal the game's cover car, the Mercedes SLS AMG, here.
Update: As half the internet is screaming out, the big install is optional.
The mandatory install will only be 256Mb, as pointed out by a Kazunori Yamauchi tweet from August. The 6.4 Gb is most likely for the optional install.
Update 2: SCEE's just sent VG247 a statement on the matter. It's in full below.
"GT5 gives users the option of an install. This makes loading times throughout much faster but is not a requirement when first playing.
If users choose not to install the data straight away it will do it in stages as news areas, tracks etc are accessed during normal game play."