title: Change single row name in data.frame
body: <p>I apologize in advance if this is a duplicate question.</p>
  
  <p>How can I change the name of a single row in a <code>data.frame</code> in R? For example, in the <code>mtcars</code> dataset, how do I rename the row <code>Merc 280</code> and call it <code>Some Mercedes</code>?</p>
  
  <p>All other posts seem to answer how to replace all row names at once.</p>
  
  <p>Thank you.</p>