Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
1951 Scottish Grand Prix
Table title:
Results
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Pos </th><th colspan=1 rowspan=1 > Driver </th><th colspan=1 rowspan=1 > Chassis </th><th colspan=1 rowspan=1 > Laps </th><th colspan=1 rowspan=1 > Time/Retired </th><th colspan=1 rowspan=1 > Average Speed </th></tr>
<tr> <th colspan=1 rowspan=1 > 1 </th><td colspan=1 rowspan=1 > United Kingdom Philip Fotheringham-Parker </td><td colspan=1 rowspan=1 > Maserati 4CL </td><td colspan=1 rowspan=1 > 50 </td><td colspan=1 rowspan=1 > 1:19:27.0 </td><td colspan=1 rowspan=1 > 75.52 mph (122 km/h) </td></tr>
<tr> <th colspan=1 rowspan=1 > 2 </th><td colspan=1 rowspan=1 > United Kingdom Gillie Tyrer </td><td class="highlighted"  colspan=1 rowspan=1 > BMW 328 </td><td colspan=1 rowspan=1 > 50 </td><td colspan=1 rowspan=1 > 1:19:34.4 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <th colspan=1 rowspan=1 > 3 </th><td colspan=1 rowspan=1 > United Kingdom Ian Stewart </td><td class="highlighted"  colspan=1 rowspan=1 > Jaguar XK120 </td><td colspan=1 rowspan=1 > 48 </td><td colspan=1 rowspan=1 > + 2 laps </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <th colspan=1 rowspan=1 > 4 </th><td colspan=1 rowspan=1 > United Kingdom Rob Dickson </td><td colspan=1 rowspan=1 > Healey </td><td colspan=1 rowspan=1 > 48 </td><td colspan=1 rowspan=1 > + 2 laps </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <th colspan=1 rowspan=1 > NC </th><td colspan=1 rowspan=1 > United Kingdom John Waugh </td><td class="highlighted"  colspan=1 rowspan=1 > Jaguar XK120 </td><td colspan=1 rowspan=1 > 44 </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <th colspan=1 rowspan=1 > Ret </th><td colspan=1 rowspan=1 > United Kingdom David Murray </td><td colspan=1 rowspan=1 > Maserati 4CLT/48 </td><td colspan=1 rowspan=1 > 40 </td><td colspan=1 rowspan=1 > Fuel pump </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <th colspan=1 rowspan=1 > Ret </th><td colspan=1 rowspan=1 > United Kingdom Bill Skelly </td><td colspan=1 rowspan=1 > Lea Francis </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <th colspan=1 rowspan=1 > Ret </th><td colspan=1 rowspan=1 > Republic of Ireland Joe Kelly </td><td colspan=1 rowspan=1 > Alta GP </td><td colspan=1 rowspan=1 > 14 </td><td colspan=1 rowspan=1 > Gearbox </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <th colspan=1 rowspan=1 > Ret </th><td colspan=1 rowspan=1 > United Kingdom Archie Butterworth </td><td colspan=1 rowspan=1 > A.J.B. </td><td colspan=1 rowspan=1 > 13 </td><td colspan=1 rowspan=1 > Engine </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <th colspan=1 rowspan=1 > Ret </th><td colspan=1 rowspan=1 > United Kingdom Reg Parnell </td><td colspan=1 rowspan=1 > Maserati 4CLT/48 </td><td colspan=1 rowspan=1 > 0 </td><td colspan=1 rowspan=1 > Driveshaft </td><td colspan=1 rowspan=1 >  </td></tr>
</table>
Question:
Who used the Jaguar XK120 in the 1951 Scottish Grand Prix?
Answer:
In the 1951 Scottish Grand Prix, Ian Stewart and John Waugh both used the Jaguar XK120.