This one is a 4×4 NXT Crawler from March 2013, a predecessor to the NXT 4×4 Crawler (2.0) I have uploaded here. It had some problems because of which I decided not to upload it, but now, looking at it again, it wasn’t half that bad. It had proper suspension, an innovative way to turn the robot, obstacle detection and a powerful drive system with a motor for each wheel.
MindTechnic 
Whoa, thanks for mentioning my robot here! 😀 I do appreciate it. Just recently found out about this blog and that was a pleasant surprise.
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