proc engineForce(self: VehicleBody): float64 {.
gcsafe, locks: 0, raises: [], tags: []
.}

proc engineForce=(self: VehicleBody; val: float64) {.
gcsafe, locks: 0, raises: [],
    tags: []
.}

proc brake(self: VehicleBody): float64 {.
gcsafe, locks: 0, raises: [], tags: []
.}

proc brake=(self: VehicleBody; val: float64) {.
gcsafe, locks: 0, raises: [], tags: []
.}

proc steering(self: VehicleBody): float64 {.
gcsafe, locks: 0, raises: [], tags: []
.}

proc steering=(self: VehicleBody; val: float64) {.
gcsafe, locks: 0, raises: [], tags: []
.}