Paul Walker 'replacements' brother Cody Walker and Justin Bieber do not respond to 'FF7' rumors, popular 'Fast and Furious' car up for sale after actor's tragic death

"Fast and Furious 7" was in the middle of filming when 40-year-old actor Paul Walker tragically passed away in a shocking car explosion. But fans believe that the show must go on, and rumors suggest that producers think Walker's own "lookalike" brother Cody might be able to shoot the remaining scenes as Brian O'Conner. Meanwhile, fans are still freaking out over this MOCK "FF7" movie trailer starring pop star Justin Bieber:

Rumors surrounding these two "Fast and Furious 7" "replacements" recently went viral on the web - read more on all the details here:

Paul Walker fans rant about Justin Bieber 'Fast and Furious 7' rumors on Twitter: 'Believe' crooner to 'replace' Brian O'Conner? [VIDEO]

Paul Walker tribute, Twitter fans debate 'best' 'Fast and Furious 7' replacement following actor's tragic car crash death [POLL]

Paul Walker's brother Cody to replace 'Fast and Furious 7' star? Twitter fans' mixed reactions to actor's younger 'lookalike'

Paul Walker 'replacement' Justin Bieber? Fans NOT amused with viral rumor after tragic death, epic tweets rock Twitter, what do you think? [POLL]

Despite such Twitter outcry, neither Cody or Bieber has yet to respond to such crazy rumors. Wonder if that means anything? Maybe the Biebs DOES really want a shot at starring in the film, and he's encouraging such viral buzz.

Stay tuned as details further develop...

Meanwhile, several reports confirm that a car collector in Germany is selling the blue Nissan Skyline GT-R Walker drove in the 2009's "Fast and Furious" film:

Before Walker's death, the current owner told a popular German car magazine that he was only seeking 300,000 euros (~$412,410) for the ride (via Yahoo Autos). But last anyone checked, the vehicle was listed at 1,000,000 euros, (~$1,374,700). According to Autoblog, the luxury car ended up in Germany in order to avoid destruction by the US government - it's "illegal to import [the car] for street use."

But if fans check now, the car is no longer available on the website.

RIP, Paul Walker.