s&box

0.4.0

22 July 2026

10 changes in this update

Opt-in per-car Sport dials on CarDefinition: SportTcSlipTarget and SportStabilityScale, so RWD cars can get their own Sport-mode traction and stability without touching Casual
Air-attitude assist: AirPitchDampTau on VehicleController damps airborne pitch so cars land flat off jumps, and the handbrake bypasses it for deliberate flips

Faster baseline: default PeakTorque 150 to 180 and RedlineRpm 6500 to 7800, about 20 percent more acceleration and top speed out of the box, hand-tuned per-car values are untouched
Reverse is no longer a crawl: ReverseSpeedCap default goes 4.5 to 20 m/s, every assist audited at full reverse speed, stability damps reverse fishtails, and the gearbox still refuses to slam into forward until near-stopped
Chassis colliders ship slick with friction 0.1, so a bottomed or landing chassis keeps its forward momentum instead of losing it to contact friction, tire grip stays the wheel model's job

Wheel visuals no longer sawtooth against the body on high-refresh displays, the suspension offset now rides the engine's fixed-tick interpolation exactly like the chassis
A driven wheel that leaves the ground now freewheels instead of flaring to redline, no more engine scream over jumps, mid-air upshifts, or tall-gear landings
Airborne wheels wind down at bearing-drag rates, they no longer arrive at half road speed after a flight and brake the car on touchdown
The demo pad no longer mirrors ghostly white copies of the cars, it ships a matte material of its own

Traction control does not act in reverse, reverse wheelspin is bounded by the drive-side rev cap instead, a proper TC pass is on the roadmap

Flight-Tested and Fun-Tuned