512k rom now that would be very very sweet

i looked on wiki and see that chase hq2 wasnt a good conversion by the looks of it.... so have we really missed anything

from wikipedia
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Sequels
Chase H.Q. has two arcade based sequels - the widely released Special Criminal Investigation from 1989 and the extremely rare Super Chase: Criminal Termination from 1992.
Special Criminal Investigation expands on the original with the addition of guns - the passenger can rise out of the T-top of his Nissan 300ZX Z32 and shoot at oncoming targets. To take advantage of this, enemies are placed through the level and will attempt to shoot at or ram the player as they attempt to pursue the main criminal. Deviating from the relatively realistic tracks on offer in the original, the sequel features pursuits through waterfalls and unfinished sections of elevated highway. Despite this the game was generally poorly received by critics.
Super Chase: Criminal Termination was the third arcade release in the Chase H.Q. series, being released in 1992. Unlike in prior games, the protagonist's vehicle was commanded from a first-person view.
The 1997 PlayStation game Ray Tracers, developed and released by Taito, has been described as "more or less a follow up" to the game,[1] with "only a few differences" such as a different speed-boost system and a greater variety of targets.[2]
In February 2006, Chase H.Q. : Nancy Yori Kinkyuu Renraku (English: Chase H.Q. - An Urgent Call From Nancy) was presented at the Arcade Operator's Union trade show in Tokyo[3]. The game was released as Chase H.Q. 2 later in the year.