<xsl:template match="htm:tr/htm:td/htm:a[contains(text(),'Car')]">
      <xsl:value-of select="../../../preceding-sibling::htm:table/htm:tr/htm:td"/>
</xsl:template>

---------------------
This prints out .....


[malc@linserv cw]$ xsltproc q2.xsl telly.xml
<?xml version="1.0"?>
22:00
BBC
News
[malc@linserv cw]$       


-------------------------------
Close but no cigar.....and so it continues