Lack of friction in Applied Physics

[s31t8n8]

There is a question in my lab, asking "describe an area of modern Applied Physics where the lack of friction is a serious disadvantage." I am not really sure what they are asking. Can someone please help me out? Thanks!

 

[mgb_phys]

Do you drive?
Is it winter in your country?

 

[s31t8n8]

without friction, driving in winter would cause the car to continue moving forward without stopping. that was easy lol. thanks a lot