On the contrary, its unsafe to not tailgate close enough.  Speed and tailgating don&#x27;t kill, differences in speed kills.<p>If you are two seconds behind, they could come to a near stop and you can crash into them at full speed.<p>If you drove with zero distance between the your bumper and the car in front of you, if they brake hard you will have no impact at all.<p>This is why it&#x27;s safe for train cars to tailgate.<p>In my view, autonomous cars will likely one day form trains for higher traffic density and throughput while remaining safe.