```{.clafer}
acc
    xor sensor
        radar
        lidar
    xor alert ?
        haptic
        audible
    powertrain
        xor transmission
            automatic
            manual
        xor driverId
            single
            multiple
        xor braking
            bas
            discrete
    switches
        xor gap
            two
            three
        cruiseInput
            cancel ?
    xor display
        headUp
        highHeadDown
        cluster
```