The T5-52 truck mounted gun-howitzer was developed by Denel Land Systems. First prototype of this artillery system was revealed in 2002. It is a South African counterpart to the French Caesar truck-mounted howitzer, developed to meet the potential requirements of India. Development of this artillery system is completed, however there were no confirmed sales.
list of top 10 self propelled artillery based on performance characteristics such as fire power and range http://www.army-technology.com/features/featurethe-10-most-effective-self-propelled-artillery-4180888/
AS-90 (Artillery System for the 1990s) lightly armoured self-propelled artillery piece (155mm) of the British Army since 1993. It can travel 230 miles on a tank of gas (assuming "road" conditions), fire up to 3 rounds every 10 seconds (atypical), and reach targets up to a maximum range of 30 miles. It is used by five regiments of the Royal Horse Artillery and Royal Artillery.