Saving in barn
Fixed ruined car parts becoming repairable after load
Lowered trolleys and engines center of mass - now they will straighten out if tipped over
Rised Car center of mass to achieve more realistic handling (it was below wheel centers resulting in swaying in opposite direction when cornering - acted like a bike)
Fixed collectible saving
Fixed trailer damaging car on load
Items in trailer and car will not jitter any more
Update 9/25
Source: Steam Community (opens in a new tab)