Just replace rhino.dff and following lines:

vehicles.ide
432, 	rhino, 		rhino, 		car, 		RHINO, 		RHINO, 		tank,	ignore,		10, 	0,	0,		-1, 0.4, 0.4,		-1

handling.cfg
RHINO       7500.0  75000.0   5.0    0.0 0.0  0.0  90  2.50 0.8  0.5  	4  80.0 40.0 150.0 4 D 	5.0   0.50 0 35.0 	0.4  0.02  0.0   0.35 -0.10 0.5  0.0		0.22 0.09 110000 	40008108	308840		0  1	0

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