** Shares of A2B Australia A2B.AX rise as much as 25.5% to
A$2.24 to hit their highest since Dec 2018
** Singapore-listed transport firm ComfortDelGro CMDG.SI
makes A$182 mln ($123.58 mln) takeover offer for the Aussie cab
operator
** Says ComfortDelGro's Aussie unit would acquire A2B for
A$1.45 per share offer
** Stock eyes best day since April 2020, if gains hold
** Stock has risen 68.4% this year, as of last close
($1 = 1.4728 Australian dollars)
(Reporting by Rishav Chatterjee in Bengaluru)
((Rishav.Chatterjee@thomsonreuters.com;))