const data = ['car', 'car', 'truck', 'truck', 'bike', 'walk', 'car', 'van', 'bike', 'walk', 'car', 'van', 'car', 'truck', 'pogostick'];

    const transportation = data.reduce((total, item) => {

      if(!total[item]){
        total[item] = 0
      }

      total[item]++
      
      return total

    },{})

    console.log(transportation)