Wazua and Wazuans lets dedicate this post to enlightened one another on some of the general questions/things we need some general information on.
For example, I have noted that heavt trailers/tankers normally have some set of two wheels/tires hanging loose just between the steering tires/wheels and the propelling tires/wheels.
What is the purpose of this hanging wheels?
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You know you've made it when you get a parking space for your yatcht.