Final answer:
The author bias in the passage is shown in the statement that 'everyone on our street would love to own at least one,' as it assumes a universal desire for luxury cars without factual backing.
Step-by-step explanation:
The question pertains to identifying author bias within a text passage. Upon examining the options provided, the one that demonstrates author bias is 'everyone on our street would love to own at least one.' This statement reflects the author's personal beliefs or assumptions rather than presenting an objective fact. It implies a universal desire for luxury cars among people on a certain street without any evidence to support such a claim. Options A, C, and D lack the personal perspective or generalized assumption that would indicate bias.