lass="op">&lt;-</span> </span>
<span><span class="fu"><a href="https://rdrr.io/r/base/data.frame.html" class="external-link">data.frame</a></span><span class="op">(</span></span>
<span>  stringsAsFactors <span class="op">=</span> <span class="cn">FALSE</span>,</span>
<span>           Vehicle <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="cn">NA</span>, <span class="cn">NA</span>, <span class="cn">NA</