this is the first ever 4wd... tamiya's produced back in 1985
source
http://www.rccartips.com/rc-history.htm
"1985 was the year of the first IFMAR 1/10th Electric Off-Road World Championship. Again, Associated Electrics won with the RC10. 5
This was also the year that Tamiya surprised everyone by introducing a 4-wheel drive (4WD) buggy called the HotShot. This was the first true off-road racing car from Tamiya. It was faster than its 2WD predecessors, especially in slippery and dusty conditions. "