Travelers maybe? Visitors
Answer:
Human papillomavirus (HPV)
Explanation:
The rough growths described are warts, which are skin growths caused by HPV.
HPV stimulates the growth of the cells on the outer layer of the skin, forming warts. There are many types of HPV, some cause warts on the hands, others can affect the feet, face, genitals, and more.
HPV infections are very common and can be spread by skin-skin contact
Answer:
Using logical reasoning, if they collided front to front the engines would have a chance of implosion. But unless they aren't the same type of vehicle, e.g. a honda civic hitting a honda civic, there wouldn't be as much damage as the same vehicles hitting each other. Unless the counterpart is taking in big trucks aswell, such as a semi hitting a bus, then there would be a mainstreet explosionary blast most likely. But either way both will be messed up BAD.