Explained in description
For #1: Find the yellowish, small-medium bushes, and try to walk through/drive through them
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For #2: try driving the new cars in a straight line, hear the skidding noise, test on road, dirt, different gears.
Try steering to feel the delay (feels like input lag) on a local server, non stressed server, then try on semi-high stress servers, with relatively medium ping (high pop server) (i was also playing on empty, 80pingish server, so it should be the best result I get, but I still feel steering delay, because of it following animation most likely :(
try gear shifting in 3PP, getting into reverse, and trying to switch instantly into 1st gear, then maybe back to Reverse, you feels lots of delay/clunkiness, trying to do multiple or even just one gear shift at once mainly in 3pp. (gear shifting should be more instant, and shouldn't also be delayed because of animation, feels like input lag)
(Also, I don't know how the car flipped, just drive high speeds along road to zelenogorsk, and just making that turn?)
*EDIT* it flips over a lot, when going on high speed, on the main roads. If there's slight change in slopes, turns, etc. that can cause the car to flip over, even when just playing on a moderate ping/low pop/low stress server.
*more footage, just extra, showing the difficulties of steering and gear shifting*
{F468160}
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For #3: try driving through the breaks in the concrete walls, with the concrete slab on the bottom of the breaks. (these walls can be found near military bases like NWAF)