How?: The Most Awesome Question and Answer Book About Nature, Animals, People, Places — and You!

How?: The Most Awesome Question and Answer Book About Nature, Animals, People, Places — and You! — page 3
nun 2 Road Trip 111 How does the steering wheel turn the car 114 Why are there so many different traffic signs 116 Why are wheels round 118 How are roads built 120 How are bridges built 124 Why does gasoline smell so strong 126 Why are there speed limits Why does it look like there is water on the road ahead How come my sister gets carsick Who invented the first car 134 128 130 132