<s>[INST] We work in an object-oriented programming paradigm. Suppose we have a base class called Car and two derived classes CarSport and CarTruck. Each of these derived classes has its own attributes and methods. Suppose also that we want to write a method which takes an object of type Car as an argument. This method wants to call a method common to only CarSport and CarTruck. This method is called accelerate. There is no method accelerate in the base class Car.

a) Write a Java code to describe the above scenario. 
b) What is the issue with the code?[/INST]